Call Comp Cams Help Line 1-800 999-0853. Tell them what you have and what you want.MY guess would be either , A --Magnum part#CB270H-10 B--XTREME ENERGY part#XE262H10, or a little milder steet cam would be C-- High ENERGY part # CB268H10 . Make sure you use new lifters.Roll Your pushrods across a flat piece of glass or a very smooth table top to make sure they are not bent. If they wobble replace any bent ones,also check the ends to look for any excessive wear.If the valve springs would handle the bigger cam you have ,they should more than handle these cams but ask anyway because the springs might too strong. It is best if yoy order the complete cam kit.